Presser board



A ril 21,- 1925.

J. M. FRASER PRESSER BOARD Filed June 18, 1924 INVEN TOR.

ATTORNEY.

delivers the Patented Apr; 21, 1925.

UNITED STATES PATENT orries.

JAMES M. FRASER, OF STAFFORD SPRINGS, GONNECTICUT.

PRESSER BOARD.

Application filedJune 18, 1924, Serial No. 720,868.

the t the wool may hecaughtand taken up bv the usual spike apron or conveyor in equal quantities and free from bunches when it is delivered to the usual weighing pan.

.Heretofore, it has been an objection to this class of machines that the wool is not delivered to the weighing pans in unitiorm quantities resulting in waste. of ma .terial as well as in the production'of goods that do not fully comply with the weight which is desired. The principal objection occurs when the spike apron carries up and wool in bunches instead of a uniform and even delivery'to, the weighing pan.

1 in object, thcrefore,of1ny invention is to provide a device which will automatically exert a uniform. pressure on the supply of wool inthe ln'ipper and whether or not the machine is full or nearly empty;

Broadly stated, my improvement coinprises a freely depending or suspended member,wl1ich is supported on an inclined guide, or bracket member, whereby it may readily and automatically assume different vertical positions due to the action of gravity and relatii e' to the quantity of wool in the machine. The improvement is so constructed and arranged that the pressure may-he varied by simply changing the angle of inelinat ion of the supporting guide or bracket l'l'lell'b her, whereby the weight of the pressure board will sul'iject the wool to a greater or lesser lateral pressure, depending upon the angle of inclination of the guide, as will be described.

Referring to the drawings: I

Fig. l is a side elevational View partly in. section, showing. the presser board attached to the card feeding machine.

Fig. 2 is an elevational view of the board removed fromthe machine, and illustrating the two freely suspended parts of the board,

and

adjusted longitudinally.

twosections and 23 of the Fig. 3 isan enlarged detail edge view of the supporting bracket or guide member tor the presser board and F 1g. alas a side elevational view of the bracket.

lleilierrin to the drawin 's in detail:

l designates the end walls oi the main frame work having the usual spike or elevating apron 2 located therein which is provided with the sharp pins or wool catching pins 3. This apron or endless carrier is supported on and driven by the shaft 41- and passes around the freelyrotatuljile shaft 5, in the usual manner. A Cil?1V1Il.g1I10l;O1,'OI any suitable motive power, is conventionally indi- .catcd at (S that is belted to a pulley 7. 8

designates the hopper or space in which the wool 9 is placed and automatically slides downward on the inclined bottom board 10. 11 is the usual comb device, and 12 the weighing pan into, which the wool from the apron 2 is delivered. Referring now to my ii'n' proveinent, l3 and 14 are a pair of brackets or guide blocks, which are secured to the inner surfacesofthe end plates 1 of the main frame. These brackets are eachtormedwith a hub or boss portion 15 in which is formed the longitudinal groove or guide way 16, and the longitudinal openings end. These openings are for the purpose of receiving the securing bolts 19 and 20 which pern'iits the braclcetsns a whole to be in the longitudinal openings 'l6 is the rod 21. {hi this rod are freely suspended the presser board, by means oi the straps 2 lwhioh pass around the rod 21 and along the opposite sides of the sections and 23 to which they are secured by means oi? the rivet-s 25. The sec tions are sepa *ated a. short distance from each other at their inner edges as indicated at Qflwhercby each section isper initted to freely move indepemlont of each other. if i g. 1. shows the parts assembled and in operation. which as l'ollows. Assuming that the wool 9 is to be scniiarated and delivered to the weighing pan 12 when the machine is Slidably located 17 and 18 at each ltll) llt) of the board slide down the groove 16 which is arranged in an inclined position. The weight of the sections of the presser board causes the sections to produce a uniform and horizontal pressure on the supply of wool with the resulting effect that the wool is taken up by the apron in a uniform quantity and delivered to the weighing pan 12, thus effectually preventing any bunching of the wool as it is delivered. When the wool is delivered in hunches due to an improper feeding of the apron the scales are usually tipped with too much therein, thus causing a wrong weight.

The degree of late a1 pressure exerted by the presser board may be varied by changing the angle of inclination of the brackets as indicated by the dotted line 27, shown in Fig. l. Spacing tubes 28 are placed on the rod 21 for maintaining the presser board sections 22 and 28 in place.

From this description it will be seen that l have provided a very etiicient and inexpensive device for auton'iatically maintaining a lateral pressure on the wool and against the apron, and particularly one which will cause substantially all of the wool in the hopper to be carried away by the apron without loss or inconvenience. This is a very important feature of my improvement as often only a small quantity of wool of a certain color or grade is to be weighed and it is very necessary that the machine should successfully operate to carry away all of the wool in the hopper without loss or waste. It is apparent that the sections 22 and 23 of the presser board can rotate or turn freely on the rod 21 by reason of the strap hinges 24. The opening 18 permits the brackets to be adjustably secured to the end pieces 1 for the purpose of varying the position of the presser board with reference to the apron so that all of the wool may be carried out of the hopper.

It. will also be seen that the presser board will follow up the wool in the hopper and exert a constant lateral or uniform pressure thereon due to the force of gravity which causes the rod 21, and the presser board atinched thereto to slide down the inclined grooves '16 of the brackets. By adjusting the brackets the pressure may be readily changed and the rate of removal of the wool also changed as readily understood.

What I claim is:

1. ln a machine of the kind described, the combination with an elevating spike apron, a presser board, means for supporting the same for producing a uniform lateral pressure in a direction towards the apron, said means comprising a pair of supporting brackets each formed with a groove, a rod in the groove, and said boards being pivotally connected to the rod, and the brackets being arranged in an inclined position, and means for securing the brackets to the machine.

2. A presser board construction for the purpose described a movable elevating apron provided with spikes, a pair of supporting brackets, means for adjustably securing the same to the frame of the machine in an inclined position, the brackets each having a groove therein, a slidable rod in the groow, a board loosely mounted for swinging movements on the rod so as to normally assume a vertical position relative to the apron for subjecting the material between the board and apron to a uniform lateral pressure, as described.

In combination, a presser board for the purpose described, an elevating apron provided with spikes, means for operating the elevating apron, grooved brackets secured to the frame of the machine in inclined positions, a rod mounted slidably in the grooves of the brackets, a sectional presser board loosely mounted at its upper edge on the rod for permitting it to swing freely on the rod for following up the material for forcing it against the said apron with a constant pressure due to the effect of gravity which causes the rod to slide down the inclined arranged grooves.

4'. In combination, a movable elevating apron, lifting prongs thereon, a presser board, means for supporting the presser board, said means comprising a pair of grooved brackets which are arranged in an inclined position, a rod slidable in the grooves, the board being pivotally suspended on the rod for free swinging movements, said board being so constructed and arranged as to normally assume different; vertical positions.

in combination, a presser board, for the purpose described, an elevating apron, means for permitting the board to a utomati- (rally assume different vertical positions due to the force of gravity. said means comprising a pair of inclined supports secured to the main frame havii'ig a groove therein, a member in the groove, the presser board freely suspended on the member.

lit) 

